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Abstrakt
Cathodic electrodeposition (CED) was applied in synthesis of undoped and zinc (Zn) doped Fe3O4 nanoparticles. Changes in the lattice structure of nanoparticles were monitored using X-ray diffraction (XRD), field-emission scanning electron microscopy (FE-SEM) supported by dispersive X-ray spectrometry (EDS), and vibrating sample magnetometry (VSM). Detailed analyses explored the formation of ZnxFe3–xO4 nanoparticles with x ≈ 0.1, and relatively low coercivity and remanence of 11.71 Oe and 0.36 emu/g, respectively, demonstrating adequate superparamagnetic degree of Zn2+-doped Fe3O4 nanoparticles. Epoxy nanocomposites containing undoped and Zn2+-doped Fe3O4 were prepared at very low amount of nanoparticles (0.1 wt.% based on 100 parts by weight of epoxy) and subjected to nonisothermal differential scanning calorimetry (DSC) at different heating rates of 5, 10, 15, and 20 °C/min. Analyses based on Cure Index criterion were edivent that curability behavior of epoxy/amine systems was changed from Poor to Good state of cure by substitution of Zn2+ cations in Fe2+ sites in the Fe3O4 lattice. Nevertheless, curing state of epoxy nanocomposite was Poor at 20 °C/min regardless of nanoparticle type, which was inferred on account of progressive curing reaction of epoxy that expedited gelation and made crosslinking pertinent to diffusion.
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Autorzy (7)
-
Maryam Jouyandeh
-
Jagar A. Ali
-
Mustafa Aghazadeh
-
Mohammad Saeb
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Zahra Ranjbar
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Mohammad Ganjali
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Informacje szczegółowe
- Kategoria:
- Publikacja w czasopiśmie
- Typ:
- artykuły w czasopismach
- Opublikowano w:
-
PROGRESS IN ORGANIC COATINGS
nr 136,
ISSN: 0300-9440 - Język:
- angielski
- Rok wydania:
- 2019
- Opis bibliograficzny:
- Jouyandeh M., Ali J., Aghazadeh M., Formela K., Saeb M., Ranjbar Z., Ganjali M.: Curing epoxy with electrochemically synthesized Zn Fe3-O4 magnetic nanoparticles// PROGRESS IN ORGANIC COATINGS -Vol. 136, (2019), s.105246-
- DOI:
- Cyfrowy identyfikator dokumentu elektronicznego (otwiera się w nowej karcie) 10.1016/j.porgcoat.2019.105246
- Weryfikacja:
- Politechnika Gdańska
wyświetlono 77 razy
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